How does Dr. Spivey save the day when the patients return the boat?

Dr. Spivey saves the day when the men return on the boat to a group of law enforcement officials, who await them on the dock. The doctor immediately takes charge, informing the police that they left without the Captain because there weren't enough life jackets on the boat for everyone. As a result, the captain withdraws all charges, and the men are free to leave.